[PATCH 3.18 22/50] ipv6: fix endianness error in icmpv6_err

[Greg Kroah-Hartman]

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit dcb94b88c09ce82a80e188d49bcffdc83ba215a6 ]

IPv6 ping socket error handler doesn't correctly convert the new 32 bit
mtu to host endianness before using.

Cc: Lorenzo Colitti <lorenzo@xxxxxxxxxx>
Fixes: 6d0bfe22611602f ("net: ipv6: Add IPv6 support to the ping socket.")
Signed-off-by: Hannes Frederic Sowa <hannes@xxxxxxxxxxxxxxxxxxx>
Acked-by: Lorenzo Colitti <lorenzo@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/ipv6/icmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 97ae70077a4f..3b5c265dcb1d 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -97,7 +97,7 @@ static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
 	if (!(type & ICMPV6_INFOMSG_MASK))
 		if (icmp6->icmp6_type == ICMPV6_ECHO_REQUEST)
-			ping_err(skb, offset, info);
+			ping_err(skb, offset, ntohl(info));
 }
 
 static int icmpv6_rcv(struct sk_buff *skb);
-- 
2.19.1